Macro texture study: a lump of Korean hardwood charcoal (white charcoal) burning slowly in the dark, its surface split by a network of deep shrinkage cracks into small blocky segments, the cracks glowing bright orange-red from the embers inside, the outer skin metallic silver-grey with a faint white ash bloom, a few fine sparks, the growth rings of the original wood still faintly visible in the cracked pattern, deep black surroundings, fills the entire image